3Com Switch 8800 Advanced Software V5 Configuration Guide

600 CHAPTER 42: PIM CONFIGURATION
Priority: 0
HoldTime: 150
Advertisement Interval: 60
Next advertisement scheduled at: 00:00:48
To view the RP information discovered on a switch, use the display pim rp-info
command. For example:
# View the RP information on Switch A.
<SwitchA> display pim rp-info
Vpn-instance: public net
PIM-SM BSR RP information:
Group/MaskLen: 225.1.1.0/24
RP: 192.168.9.2
Priority: 0
HoldTime: 150
Uptime: 00:51:45
Expires: 00:02:22
Assume that Host A needs to receive information addressed to the multicast group
G (225.1.1.1/24). An RPT will be built between Switch A and Switch E. When the
multicast source S (10.110.5.100/24) registers with RP, an SPT will be built
between Switch D and Switch E. Upon receiving multicast data, Switch A
immediately switches from the RPT to the SPT. Switches on the RPT path, (Switch
A and Switch E for example) contain (*, G) and (S, G) entries, while routers on the
SPT path (Switch A and Switch D for example) contain an (S, G) entry. You can use
the display pim routing-table command to view the PIM routing table
information on the switches. For example:
# View the PIM routing table information on Switch A.
<SwitchA> display pim routing-table
Vpn-instance: public net
Total 1 (*, G) entry; 1 (S, G) entry
(*, 225.1.1.1), RP: 192.168.9.2
Protocol: pim-sm, Flag: WC
UpTime: 00:13:46
Upstream interface: Vlan-interface102,
Upstream neighbor: 192.168.9.2,
RPF prime neighbor: 192.168.9.2
Downstream interface(s) information:
Total number of downstreams: 1
1: Vlan-interface100
Protocol: pim-sm, UpTime: 00:13:46, Expires: -
(10.110.5.100, 225.1.1.1), RP: 192.168.9.2
Protocol: pim-sm, Flag: SPT LOC
UpTime: 00:00:42
Upstream interface: Vlan-interface101,
Upstream neighbor: 192.168.9.2,
RPF prime neighbor: 192.168.9.2
Downstream interface(s) information:
Total number of downstreams: 1
1: Vlan-interface100
Protocol: pim-sm, UpTime: 00:00:42, Expires:-